A library is an open system connected to the outside world by a variety of diverse and extensive connections, and influenced by all the basic laws and trends of society's development. The system of library legislation is formed by various laws and other regulatory acts issued in accordance with them, which directly or indirectly regulate the relationships that arise during the implementation of library activities. The purpose of the article is to analyze the basic directions of regulatory activities in the field of managing library depository collections’ preservation in the context of social, economic, and political transformations. The objective is to identify management and regulatory problems and propose solutions aimed at preserving the cultural and scientific heritage collected in the depository of the State Public Scientific Technological Library of the Siberian Branch of the Russian Academy of Sciences (SPSTL SB RAS) and the collections of libraries of scientific institutions of the Siberian Branch of the Russian Academy of Sciences. The methods used include content analysis, document analysis, comparative analysis, and others.
